<template>
  <div class="upload-container">
    <el-button :style="{background:color,borderColor:color}" icon="el-icon-upload" size="mini" type="primary" @click=" dialogVisible=true">
      上传图片
    </el-button>
    <el-dialog :visible.sync="dialogVisible" append-to-body>
      <el-upload
        :multiple="true"
        :file-list="fileList"
        :show-file-list="true"
        :before-remove="beforeRemove"
        :on-success="handleSuccess"
        :on-error="handleError"
        :before-upload="beforeUpload"
        class="editor-slide-upload"
        :action="uploadUrl"
        :headers="uploadHeader"
        :data="uploadData"
        list-type="picture-card"
      >
        <el-button size="small" type="primary">
          点击上传
        </el-button>
      </el-upload>
      <el-button @click="dialogVisible = false">
        取消
      </el-button>
      <el-button type="primary" @click="handleSubmit">
        插入
      </el-button>
    </el-dialog>
  </div>
</template>

<script>
// import { getToken } from 'api/qiniu'
import { getToken } from '../../../utils/auth'
import { deleteUploadTempFile } from '../../../api/upload'

export default {
  name: 'EditorSlideUpload',
  props: {
    color: {
      type: String,
      default: '#1890ff'
    },
    imageDirName: {
      type: String,
      default: 'tinymce'
    }
  },
  data() {
    return {
      uploadUrl: process.env.VUE_APP_BASE_URL + process.env.VUE_APP_IMAGE_UPLOAD_API,
      uploadHeader: {
        Authorization: 'Bearer ' + getToken()
      },
      uploadData: {
        type: 'image',
        dir_name: this.imageDirName
      },
      dialogVisible: false,
      listObj: {},
      fileList: []
    }
  },
  methods: {
    checkAllSuccess() {
      return Object.keys(this.listObj).every(item => this.listObj[item].hasSuccess)
    },
    handleSubmit() {
      const arr = Object.keys(this.listObj).map(v => this.listObj[v])
      if (!this.checkAllSuccess()) {
        this.$message('Please wait for all images to be uploaded successfully. If there is a network problem, please refresh the page and upload again!')
        return
      }
      this.$emit('successCBK', arr)
      this.listObj = {}
      this.fileList = []
      this.dialogVisible = false
    },
    handleSuccess(response, file) {
      const uid = file.uid
      const objKeyArr = Object.keys(this.listObj)
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          this.listObj[objKeyArr[i]].url = response.data.img_url
          this.listObj[objKeyArr[i]].hasSuccess = true
          return
        }
      }
    },
    handleError(response, file) {
      const uid = file.uid
      const objKeyArr = Object.keys(this.listObj)
      // console.log(response, uid, objKeyArr)
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          delete this.listObj[objKeyArr[i]]
          return
        }
      }
    },
    beforeRemove(file) {
      const uid = file.uid
      const objKeyArr = Object.keys(this.listObj)
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          // delete this.listObj[objKeyArr[i]]
          return deleteUploadTempFile({
            file_name: this.listObj[objKeyArr[i]].url
          }).then(response => {
            // console.log(response)
            if (response.errorCode === 0) {
              delete this.listObj[objKeyArr[i]]
            }
          })
        }
      }
    },
    beforeUpload(file) {
      const _self = this
      const _URL = window.URL || window.webkitURL
      const fileName = file.uid
      this.listObj[fileName] = {}
      return new Promise((resolve, reject) => {
        const img = new Image()
        img.src = _URL.createObjectURL(file)
        img.onload = function() {
          _self.listObj[fileName] = { hasSuccess: false, uid: file.uid, width: this.width, height: this.height }
        }
        resolve(true)
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.editor-slide-upload {
  margin-bottom: 20px;
  /deep/ .el-upload--picture-card {
    width: 100%;
  }
}
</style>
